Omron E39-RS4 Reflector: Technical Guide and Application Manual
A sensor failure on a production line can mean hours of downtime. The Omron E39-RS4 Reflector — rated at Passive — is designed to prevent such unplanned stops in critical applications like photoelectric sensor applications.
For projects where sensing and control decisions must be made together, Omron’s Omron Sensor products are a natural companion to this unit. Both families are built to the same quality standards.
Omron E39-RS4 Overview
The Omron E39-RS4 is a Reflector rated at Passive designed to reliably handle photoelectric sensor applications applications. Key engineering features include reflector for retro-reflective sensors, high reflection, ip67.
From a technical standpoint, the Omron E39-RS4 offers reflector for retro-reflective sensors, high reflection, ip67. Supply voltage Passive delivers reliable field performance.
Key Technical Parameters
The table below summarises the main technical parameters of the Omron E39-RS4. For complete specifications, refer to the official Omron product datasheet.
| Parameter | Value |
|---|---|
| Product Type | Reflector |
| Operating Voltage | Passive |
| Output Type | Passive |
| Key Features | Reflector for retro-reflective sensors, high reflection, IP67 |
| Mounting | Screw mount |
| Lifetime | Optical |
| Operating Temperature | -25°C to +70°C |
| Compatible Accessory | E3S/E3Z sensors |
Typical Application Areas
The Omron E39-RS4 Reflector is commonly specified for the following applications:
- Photoelectric sensor applications
- Long-range detection
- Industrial automation
Across these use cases, the consistent requirement is reliable detection — often in environments where an unplanned fault would create significant disruption. The Omron E39-RS4 is designed with exactly those conditions in mind.
Mounting and Commissioning
Commissioning the Omron E39-RS4 Reflector is easy. Attach to the mounting bracket, make cable connections, and verify polarity. During the first test, move the target in and out of the sensing area and observe that the LED indicator responds stably.
For ongoing maintenance, keep the sensor lens clean, check cable connections, and periodically test that the LED indicator functions correctly. Early intervention avoids the much larger cost of an unplanned production stop.
The Case for Choosing Omron
Lower-priced alternatives exist, and some perform adequately in light-duty applications. But in continuous-operation environments, the Omron E39-RS4 Reflector consistently outlasts them — because every detail has been optimised for industrial use.
Frequently Asked Questions
What applications is the Omron E39-RS4 designed for?
The Omron E39-RS4 Reflector is designed primarily for photoelectric sensor applications, long-range detection, industrial automation.
What voltage does the Omron E39-RS4 operate at?
The Omron E39-RS4 operates at Passive supply voltage.
What is the sensing distance of the Omron E39-RS4?
Sensing distance depends on target material and environmental conditions. The nominal sensing distance for the Omron E39-RS4 Reflector is stated in the datasheet. In actual applications, 80% safe operating margin is recommended.
What protection rating does the Omron E39-RS4 have?
The Omron E39-RS4 Reflector has IP67 protection rating, meaning it is protected against dust and temporary water immersion.
Where can I source the Omron E39-RS4 in Europe?
The Omron E39-RS4 Reflector is available through Omron’s authorised European distributors.